简述了具有密排六方(hcp)结构镁合金材料各种可能的滑移和孪生系统及其临界切变应力; 以镁合金塑性变形机理为主线, 分别对单晶和多晶镁合金材料塑性变形行为及微观机理的影响规律, 轧制、挤压及不同严重塑性变形模式下镁合金织构的形成机理, 形变镁合金材料退火过程中回复与再结晶及镁合金材料在热变形过程中的动态再结晶机理, 以及沉淀硬化镁合金塑性变形机理、特别是沉淀相与位错滑移及孪生的交互作用机理等进行了总结与评述. 同时, 对高成形性镁合金及提高镁合金塑性成形能力的塑性变形机理进行了讨论.
Possible slip and twinning systems and their critical resolved shear stresses of Mg alloys with hcp structure were described. Research works on plastic deformation behavior and micro-mechanism of different kinds of Mg alloys were reviewed. Both microstructure and texture evolutions during different thermomechanical processes, both dynamic and static recrystallization mechanisms of Mg alloys were described and discussed. Deformation and strengthening mechanisms of precipitates hardening Mg alloys were also addressed with emphasis on the interaction between precipitates and twinning/slip.
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